CN104267539B - LED (light-emitting diode) light mixing device - Google Patents
LED (light-emitting diode) light mixing device Download PDFInfo
- Publication number
- CN104267539B CN104267539B CN201410529423.2A CN201410529423A CN104267539B CN 104267539 B CN104267539 B CN 104267539B CN 201410529423 A CN201410529423 A CN 201410529423A CN 104267539 B CN104267539 B CN 104267539B
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- CN
- China
- Prior art keywords
- support column
- led light
- backboard
- led
- mixing devices
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133608—Direct backlight including particular frames or supporting means
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses an LED (light-emitting diode) light mixing device which comprises a back panel, an optical film, LED light sources and a supporting column. The optical film is arranged above the back panel, and the LED light sources are arranged on the back panel and distributed to form a central symmetric figure. The supporting column is arranged between the back panel and the optical film and located at the center of the central symmetric figure. The supporting column is provided with a bottom, a top and sides, wherein the bottom is fixed on the back panel, the top supports the optical film, a side surface surrounds the sides, and the LED light sources are located on the perpendicular bisectors of the bottom edges of the sides of the supporting column respectively. The LED light sources of the LED light mixing device form the central symmetric figure, the supporting column of a prism or prismatic table structure is made of transparent materials and located at the center of the central symmetric figure, so that shadows caused by the supporting column in an LED backlight module are removed with low cost.
Description
The application is the Application No. " 201210257868.0 " that on July 23rd, 2012 submits to State Intellectual Property Office,
The divisional application of entitled " a kind of support column of LED-backlit module ".
Technical field
The present invention relates to LED optical technical field, and in particular to a kind of LED mixed lights for constructing mixed light space are filled
Put, it can be applicable to the backlight module of liquid crystal display.
Background technology
Lcd technology one is to being applied to laptop, mobile phone, digital camera, Video Camera, PDA etc.
In portable electronic product.In addition to these more small-sized portable products, large-sized liquid crystal panel manufacture recently
Technology is also day by day ripe.For example, desktop type liquid crystal display instead of CRT monitor, LCD TV with its volume it is light and handy,
Clearly advantage is also just replacing traditional TV to picture.Liquid crystal panel is the display element of most critical in this field, but its
Body does not light, and needs can just be able to display image by backlight.Many back light source techniques existing now, and in 20 English
It is very little more than large scale liquid crystal show product in, Jing frequently with down straight aphototropism mode set as liquid crystal panel backlight.
Direct-light type LED backlight module is one of most widely used backlight form, is widely used in liquid crystal display
Backlight module, down straight aphototropism mode set has the advantages that cost performance height, optical stability are good.The base of direct-light type LED backlight module
This framework includes and is arranged at the LED light source of module bottom, is arranged at the blooming piece of die set top（For example diffuser plate, diffusion sheet,
Prismatic lenses etc.）And the support column being arranged between LED light source and blooming piece.The effect of support column is provided for LED light source
The mixed light space of certain altitude, so as to obtain the planar backlight source of uniform in light emission.
The support column custom of direct-light type LED backlight module of the prior art is using white plastic material and cone shape knot
Structure, as shown in Figure 1：The support column 03 of its white cone-shaped structure can be produced because some light of LED light source 04 is sheltered from
Shadow 05, has a strong impact on the visual effect of optical homogeneity and module.Direct-light type LED backlight module support post is solved at present
The common method of shadow is by increasing blooming piece（Such as diffuser plate, diffusion sheet, prismatic lenses etc.）Quantity desalinating shadow
Vision imaging.This method is suffered from the drawback that：
1st, the quantity of blooming piece is increased, the cost for making LED-backlit module is raised；
2nd, increase the quantity of blooming piece, reduce LED-backlit module overall brightness.
Market in urgent need is developed one kind and can not only eliminate shadow and lower-cost LED light mixing devices.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide one kind can eliminate direct-light type LED backlight module
In shadow and also lower-cost LED light mixing devices.
To reach above-mentioned purpose, the technical scheme is that：A kind of LED light mixing devices, it includes backboard, blooming
Piece, LED light source and support column, the blooming piece is arranged on backboard top, and the LED light source is arranged on backboard and in
Heart symmetric figure is distributed, and the support column is arranged between the backboard of LED light mixing devices and blooming piece and positioned at centrosymmetry
The center of figure, the support column has bottom, top and sidepiece, wherein, bottom is fixed on backboard, top braces blooming
Piece, sidepiece is surrounded with one side, and the LED light source is respectively on the perpendicular bisector on support column side base.
Described support column is prism or terrace with edge structure.
Described support column is transparent material, and the light that the LED light source sends penetrates the side of support column.
The light transmittance of the transparent material is more than or equal to 50%.
The transparent material is PMMA, PC, PA or glass.
The support column top is provided with spherical crown, and spherical crown surface is to seamlessly transit with the side of support column.
The support column bottom is provided with claw, and backboard is provided with location hole, and claw is fixed through the location hole on backboard and propped up
Dagger is on backboard.
The support column bottom is provided with block.
The LED light mixing devices that the present invention is provided can be applicable to the LED-backlit module in liquid crystal display.
The present invention, using the figure distribution in a center of symmetry of the LED light source of LED light mixing devices, is supported using the structure of the above
Post adopts transparent material, and it is located at the center of centrosymmetric image, and support column is prism or terrace with edge structure, and LED light source distinguishes position
On the perpendicular bisector on support column side base, increase light penetration, realize the light penetration support column of LED light source, eliminate
The shadow that support column is formed in LED-backlit module, and the cost of its solution shadow is relatively low.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is further detailed explanation：
Fig. 1 is the optical principle schematic diagram of support column in prior art；
Fig. 2 is the assembling structure schematic diagram of the present invention；
Fig. 3 is the schematic side view of Fig. 2 of the present invention；
Fig. 4 is a kind of structural representation of the embodiment 1 of the support column of LED-backlit module of the present invention；
Fig. 5 is a kind of structural representation of the embodiment 2 of the support column of LED-backlit module of the present invention；
Fig. 6 is a kind of optical principle schematic diagram of the support column of LED-backlit module of the present invention.
Specific embodiment
As shown in one of Fig. 2-6, a kind of LED light mixing devices of the invention, it includes backboard 2, blooming piece 1, LED light source 4
And support column 3, the blooming piece 2 is arranged on the top of backboard 2, and the LED light source 4 is arranged on the Shang Qiecheng centers pair of backboard 2
Figure distribution, the support column 3 is claimed to be arranged between the backboard 2 of LED light mixing devices and blooming piece 1 and positioned at centrosymmetry figure
The center of shape, the support column 3 has bottom, top and sidepiece, wherein, bottom is fixed on backboard 2, top braces blooming piece
1, sidepiece is surrounded with one side, and the LED light source 4 is respectively on the perpendicular bisector on the side base of support column 3.
Described support column 3 is prism or terrace with edge structure.Described support column 3 be transparent material, the LED light source 4
The light for going out penetrates the side of support column 3.
The light transmittance of the transparent material is more than or equal to 50%.
The transparent material can be PMMA（Also referred to as polymethyl methacrylate）、PC（Also referred to as Merlon）、PA
（Also referred to as polyamide）Or glass, certainly the transparent material can also be other high-molecular organic materials, transparent inorganic material
Material or transparent composite etc..
The top of the support column 3 is provided with spherical crown 31, and the surface of spherical crown 31 is to seamlessly transit with the side of support column 3.
The bottom of the support column 3 is provided with claw 32, and backboard 1 is provided with location hole 11, and claw 32 is through the positioning on backboard 2
Support column is fixed on backboard 2 in hole 11.
The bottom of the support column 3 is provided with block 33, and block 33 preferably can be fixed on support column 3 on backboard 2, limits and props up
The rotation of dagger 3.
Using the structure of the above, support column 3 is prism or terrace with edge structure, the correspondence support column 3 of LED light source 4 side base
Perpendicular bisector is arranged, and the light for enabling LED light source 4 is smoothly penetrated from support column 3, without forming dark in LED-backlit module
Shadow.
As shown in Figure 6：The optical principle schematic diagram of the present invention, because support column 3 is prism or terrace with edge structure, because its side
Face is plane, and each LED light source 4 is arranged on the perpendicular bisector on each side base of support column 3, so being conducive to wearing for light
Thoroughly, so as to eliminating the shadow of support column 3.
Embodiment 1
As shown in figure 4, the support column 3 is the arrangement illustrated position of the relative LED light source 4 of quadrangular or terrace with edge.
Embodiment 2
As shown in figure 5, the support column 3 is the arrangement illustrated position of the relative LED light source 4 of six prisms or terrace with edge.
Claims (5)
1.LED light mixing devices, it is characterised in that：It includes backboard, blooming piece, LED light source and support column, the blooming
Piece is arranged on backboard top, and the LED light source is arranged on backboard and figure in a center of symmetry is distributed, and the support column is arranged on
Between the backboard and blooming piece of LED light mixing devices and positioned at the center of centrosymmetric image, the support column has bottom, top
With sidepiece, wherein, bottom is fixed on backboard, top braces blooming piece, and sidepiece is surrounded with one side, the LED light source point
Wei Yu not be on the perpendicular bisector on support column side base；Described support column is transparent material, the light transmittance of transparent material more than etc.
In 50%；The support column bottom is provided with claw, and backboard is provided with location hole, and claw is fixed through the location hole on backboard and supported
Post is on backboard；Described support column is prism or terrace with edge structure.
2. LED light mixing devices according to claim 1, it is characterised in that：The transparent material is PMMA, PC, PA or glass
Glass.
3. LED light mixing devices according to claim 1, it is characterised in that：The support column top is provided with spherical crown, spherical crown table
Face is to seamlessly transit with the side of support column.
4. LED light mixing devices according to claim 1, it is characterised in that：The support column bottom is provided with block.
5. LED light mixing devices according to claim 1, it is characterised in that：The LED light mixing devices are applied to liquid crystal display and set
Standby backlight module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410529423.2A CN104267539B (en) | 2012-07-23 | 2012-07-23 | LED (light-emitting diode) light mixing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102578680A CN102767803A (en) | 2012-07-23 | 2012-07-23 | Support pillar of LED (light emitting diode) backlight module |
| CN201410529423.2A CN104267539B (en) | 2012-07-23 | 2012-07-23 | LED (light-emitting diode) light mixing device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102578680A Division CN102767803A (en) | 2012-07-23 | 2012-07-23 | Support pillar of LED (light emitting diode) backlight module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104267539A CN104267539A (en) | 2015-01-07 |
| CN104267539B true CN104267539B (en) | 2017-04-12 |
Family
ID=52159072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410529423.2A Active CN104267539B (en) | 2012-07-23 | 2012-07-23 | LED (light-emitting diode) light mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104267539B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11054700B2 (en) | 2017-04-26 | 2021-07-06 | Citizen Electronics Co., Ltd. | Backlight |
| CN109212830A (en) * | 2018-10-17 | 2019-01-15 | 惠州市华星光电技术有限公司 | Backlight module and its manufacturing method |
| CN115016179A (en) * | 2022-06-29 | 2022-09-06 | 苏州华星光电技术有限公司 | Backlight module and manufacturing method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888954A (en) * | 2006-06-09 | 2007-01-03 | 友达光电股份有限公司 | Method for eliminating light-emitting diode backlight module support column surrounding shadow |
| TW200835964A (en) * | 2007-02-26 | 2008-09-01 | Au Optronics Corp | Display and backlight module thereof |
| CN103225770A (en) * | 2012-01-30 | 2013-07-31 | 群康科技(深圳)有限公司 | Backlight module and display device comprising same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200506455A (en) * | 2003-08-01 | 2005-02-16 | Au Optronics Corp | Straight-down backlight module |
-
2012
- 2012-07-23 CN CN201410529423.2A patent/CN104267539B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888954A (en) * | 2006-06-09 | 2007-01-03 | 友达光电股份有限公司 | Method for eliminating light-emitting diode backlight module support column surrounding shadow |
| TW200835964A (en) * | 2007-02-26 | 2008-09-01 | Au Optronics Corp | Display and backlight module thereof |
| CN103225770A (en) * | 2012-01-30 | 2013-07-31 | 群康科技(深圳)有限公司 | Backlight module and display device comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104267539A (en) | 2015-01-07 |
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